I remember
@tcdawg asking a year or two ago about these jump batteries and figured it worth posting for anybody still looking for a solid boost/charger/jump for 12v.
I use the gb70 model &:it's been worth every penny after 3 years.
I can jump the Jeep JK, xj and the ram hemi , all consecutively , 40-50
times on a charge .
KK & I charge our phones , tablets, the Rugged handset radio, in our tent w/ it as we sleep when on GATR overnight rides. Next morn, just let it charge while we trailride the next day via USB.
This was on Amazon this morning for the gb40 NOCO . Its a good deal for a $100,
thru noon today, if you're looking for backup 12v power:
https://www.amazon.com/dp/B015TKUPIC/ref=cm_sw_r_sms_apa_i_WCD8EbZKG6WA3-
NOCO Boost Plus GB40 1000 Amp 12-Volt Ultra Safe Portable Lithium Car Battery Jump Starter Pack For Up To 6-Liter Gasoline And 3-Liter Diesel Engines